Quantum Chemistry(Terasaki Lab.)
Atomic and molecular clusters offer a unique opportunity to elucidate how physical and chemical properties of a matter emerge as atoms and molecules associate together one by one. We are interested, for example, in how ferromagnetism emerges for iron, cobalt, and nickel among 3d transition metals, whereas other elements do not exhibit it. For another example, silver nanoparticles are known to show strong photoabsorption, so-called surface-plasmon resonance, which is technologically important in coupling light with materials. However, one does not know how this picture works for small particles less than 1 nm in diameter. Furthermore, clusters provide a model of catalysts to gain molecular-level insights into mechanism of chemical reactions. We tackle these problems in materials science with single-atom precision toward advanced nano-science and technology.